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neutron definition

neu·tron (no̵̅o̅′trän′, nyo̵̅o̅′-)

noun

Particle Physics an uncharged nucleon having a mass of c. 1.675×10 kg (c. 939.5729 MeV/c, c. 1,839 times the mass of an electron): a free neutron, as in nuclear fission, has a half-life of c. 14.8 minutes, is readily absorbed by a nucleus, and decays into a proton, an electron, and a neutrino

Etymology: neutr(al) + -on

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Alternate definitions:

medical neutron definition - medical

neutron Usage Examples

Converse of object

  • absorb: Shields made of water or wax can be used to absorb neutrons.

Preposition: in

  • nucleus: Mass number The number of protons plus neutrons in the nucleus of an atom.

Adjective modifier

  • thermal: Once thermal neutrons have been produced, then nuclear fission may begin to occur.

Modifies a noun

  • diffraction: Ted was ideally placed to make use of neutron diffraction to study the nature of the vortex state.

Noun used with modifier

  • spallation: ISIS is the world's brightest spallation neutron source situated at the Rutherford Appleton Laboratory.
neutron usage examples (more)

The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.

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MLA Style

"neutron." Webster's New World College Dictionary. 2009

  • Your Dictionary. 5 July 2009
  • <www.yourdictionary.com/neutron>

APA Style

neutron. (2009). In Webster's New World College Dictionary

  • Retrieved July 5th, 2009, from www.yourdictionary.com/neutron

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